Need help trouble shooting hub going offline

My hub has just started going offline and staying that way until I disconnect it from power for 10 minutes and let it boot up again. It stayed up long enough so I could download and install the latest firmware. I thought that had solved it, but today offline again. Can't access from apps on my iPhone or iPad. Can't get a response from my Mac. It may be a coincidence but it started when I and everyone in my neighborhood was having AT&T Fiber Internet problems. Since it will come back online after a reboot, usually for a few hours, I am hoping you can point me to the information I should try to collect while it is up, to help diagnose the problem, even if it is hardware, I just want to know. Thanks in advance. Here are my hub details: Platform Version: 2.4.0.151
MAC Address - REDACTED
Hardware Version - C-8
IP Address - 192.168.1.95 (Ethernet), 192.168.2.24 (WiFi - HomeNet-2.4ghz)
Hub UID - REDACTED

Have you also rebooted your router since the fiber issue?

If you have you hub plugged into ethernet, you need to disconnect/disable the Wifi. Having both connected will only cause problems. It does not work as a failover.

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OK, just disconnected WiFi. Will monitor for a few days (if it stays online) and report back.

I have powered it down numerous times. Right now I am trying the recommendation to disconnect from WiFi. Will report back.

I use ethernet and have no WiFi networks set up on WiFi tab. I don't see a disable WiFi option. Is it enough just not to load a network SSID and password? or is there a complete disable WiFi switch lurking somewhere?

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Yes

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Consider this trouble shooting complete. Once I removed the WiFi Connection to my Hub, it has stayed online and is working great. So I am a happy user now. However, it seems that the Hubitat software team should consider my initial situation a defect. If you can set up both the system should continue to work.